PT - JOURNAL ARTICLE AU - Roberto J Rona TI - Asthma and poverty AID - 10.1136/thorax.55.3.239 DP - 2000 Mar 01 TA - Thorax PG - 239--244 VI - 55 IP - 3 4099 - http://thorax.bmj.com/content/55/3/239.short 4100 - http://thorax.bmj.com/content/55/3/239.full SO - Thorax2000 Mar 01; 55